255823904 has 144 divisors (see below), whose sum is σ = 638910720. Its totient is φ = 100154880.

The previous prime is 255823879. The next prime is 255823907. The reversal of 255823904 is 409328552.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (255823907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 923414 + ... + 923690.

It is an arithmetic number, because the mean of its divisors is an integer number (4436880).

Almost surely, 2^255823904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255823904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319455360).

255823904 is an abundant number, since it is smaller than the sum of its proper divisors (383086816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255823904 is a wasteful number, since it uses less digits than its factorization.

255823904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 255823904 is about 15994.4960533303. The cubic root of 255823904 is about 634.8147962585.

It can be divided in two parts, 2558 and 23904, that added together give a palindrome (26462).

The spelling of 255823904 in words is "two hundred fifty-five million, eight hundred twenty-three thousand, nine hundred four".